Size: L (suitable for chest 95cm~125cm) Material: Sponge+ webbing Weight: 100g Package contents: 1 piece of corrector 1. Comfortable supportive posture Correctors designed to relieve chronic back pain and make long hours at work or standing easy. With proper posture, you can reduce back, neck, shoulder and collarbone pain by taking pressure off key areas. 2. Designed to correct your posture in a comfortable way, the corrector is fully adjustable and breathable, and you can easily wear it under your clothes to conquer your day in a painless way. 3. Build up your confidence by developing proper posture. Start by using our back straightener for 5-10 minutes a day, then increase to 1-2 hours at a time. After a while, you'll find yourself standing taller, looking healthier, and feeling better. It's all on your own! 4. Our back support features high-end durable stitching that keeps it smooth to the touch, breathable, and won't upset or irritate your skin like most other inexpensive posture correctors.